Gear-case for railway-motors and means for mounting the same.



No. 830,830. PATENTED SEPT. 11, 1906. A. GRAMMONT. GEAR CASE FOR RAILWAY MOTORS AND MEANS FOR MOUNTING THE SAME.

APPLIUATION TILED MAR. 21. 1905.

2 SHEETS-SHEET 1.

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rn: NDRRIS Penn-s cm, WASHINGTON. n. c.

,830. PATENTED SEPT. 11, 1906.

A. GRAMMONT. GEAR CASE FOR RAILWAY MOTORS AND MEANS FOR MOUNTING THE SAME.

APPLICATION FILED MAR. 21, 1905.

2 SHEETS-SHEET 2.

WITNESSES UnirnD STATES PATENT orrron.

ALEXANDRE GRAMMONT, OF PONT-DE-OHERRY,

FRANCE.

Specification of Letters Patent.

Patented Sept. 11. 1906.

Application filed March 21, 1905. Serial No. 251.350.

To. all whmn' it may concern:

Be it known that I, ALEXANDRE GRAM- MONT, a citizen of the Republic of France, residing at Pont-de-Oherry, France, have invented certain new and useful Improvements in Gear-Cases for Railway-Motors and Means for Mounting the Same, of which the following is a specification.

This invention relates to cases for inclosing the gears of electric-railway cars, an has among its objects to provide a device of this type possessing maximum lightness, tightness, and strength.

A further object of the invention is to provide an improved means of mounting the gear-case.

With these ends in view the invention con sists in the novel features and combinations of parts to be hereinafter described and finally pointed out in the claims.

In the accompanying drawings, Figure 1 is a bottom plan view of the upper half or section of the improved gear-case. Fig. 2 is a side elevation, partly in section, of the gearcase, showing the manner of mounting the same. Fig. 3 is a top plan view of Fig. 2, a portion of the casing being removed. Fig. 4 is a detail side elevation of the front portion of the gear-case, and Fig. 5 is a detail trans-- verse section showing the opening through which the motor-shaft projects.

Similar reference characters denote corresponding parts throughout the several views.

Referring to the drawings, A and B denote the two main sections or halves of the improved gear-case, said sections being superposed, as shown, and when assembled forming a case of essentially ovoid shape and of rectangular cross-section. The parts A and B are made of sheet-steel in order to produce maximum lightness and rigidity. Each section of the gear-case carries at its sides semicircular bearing-pieces D D of phosphorbronze or other material, which pieces when the parts are superposed surround the axle of the car-wheels. The smaller or reduced portion of the casing is disposed toward the motorshaft. At the rear of the casing the sections A B are united by U-shaped angle-irons G G, which are riveted to the back and sides of each section and are then united by bolts, as shown in Figs. 2 and 3.

Adjacent the front end of the section B of the gear-case is a small front section C, divided from the same vertically. Said section C is provided at its upper edge with a I semicircular opening registering with a similar opening in the upper section A, said openings serving to receive the motor-shaft, as shown in Fig. 3. The sections A and C are unitedat their front portions by means of angle-irons E E, as's hown in Figs. 2, 3, and 4. Extending outwardly from a relatively fixed part (illustrated as the motor-casing) is a stay L, which is clamped to the anglepieces E E by means of bolts, a resilient washer being interposed between said stay and the angle-piece E. tached to the section B by means of angleirons II, extending transversely across the meetingedges of said sections and clamped in the manner previously described. In order to form a hermetic closure between said parts, vertical strips K K are placed over the upright meeting edges between said sections. Said strips K K are attached to the section B only by means of rivets. Extending between the upper ends of the strips K K and the bearing-pieces D D are strips F F, which cover the meeting edges of the sections A B from said first-named strips to the bearing-pieces D D.

The sections A B are united at their meeting edges from their extreme rear approximately to the bearing-pieces by means of the angle-irons G G, while the strips F F firmly unite the front portions of said sections.

In order to afford access to the pinion, which is mounted upon the motor-shaft within the gear-case, a sliding door H is provided in the upper front portion of the section A. When the closure H is found insufficient when it is desired to examine the pinion, the section C may be entirely removed. This can be readily done by unscrewing the angleirons I I and E E, as will be obvious.

It 'will be noted that the gear-case is supported upon the car-axle solely by the bearing-pieces D D. In order to prevent the rotation of the gearcase, which would follow if the latter were supported at one point only, the stay L is provided. Said stay and the car-axle are the sole supports for the gearcase. The washer between said stay and the lower angle-piece E serves to reduce the vibration imparted to the casing from the motor-casing.

By my invention a gear-case is provided which, being hermetically sealed at the joints, prevents the escape which the gears operate.

Having thus described my invention, I

The section C is atg of the lubricant in first-named strips passes transversely,

claim as new and'desire to secure by Letters Patent 1. A gear-case such as described formed in two superposed sections, and a removable section attached to the front portion of the lower section, the meeting edges of said lower section and said removable section being hermetically covered by a strip attached to only one of said sections.

2. A gear-case comprising two main sections A, B divided horizontally from each other, bearing-pieces D, D carried by said sections, a removable section C divided vertically from the section B, strips K, K attached to said last-named section only and covering the meeting edges of said section and said removable section, and strips F, F attached to the section A and covering the meeting edges of said section and of the lower section between the upper edges of said and said bearing-pieces.

' 3. The combination, with a car-axle, of a gear-case through one end of which said axle and a relatively fixed stay attached to the other end of said gearcase, said gear-case being supported solely by said axle and said stay.

4. The combination, with a car-axle, of a l gear-case through one end of which said axle i passes transversely, and means for resiliently supporting the opposite end of said gear-case and preventing its rotation with said axle.

5. The combination, with a car-axle, of a gear-case through which said axle extends transversely and which is supported on said axle, a rigid stay attached to said gear-case and preventing the rotation of the same with said axle, and a resilient washer interposed between said stay and the part of said gearcase to which it is attached.

6. The combination, with a car-axle, of a 'f gear-case through which said axle extends, said case being constituted by a plurality of sections, angle-pieces for uniting said sections, a rigid stay secured to certain of said angle-pieces, and a resilient washer interposed between said stay and one of said last-named angle-pieces.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ALEXANDRE GRAMMON T.

Witnesses:

THOS. N. BRowNE, MARIN VAGHON. 

